Holding(s) in Company

Radstone Technology PLC
23 January 2006


                          Redstone PLC ("the Company")


                               Holding in Company



The Company was notified on 23 January 2006 by Artemis Investment Management
Limited that it, and certain of its subsidiary companies, have a notifiable
interest of 52,985,567 Ordinary Shares representing 7.22 per cent. of the issued
share capital of the Company.


23 January 2006






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